Hello, Can you see any Add-ons that you did not install yourself? If so then remove them. If that doesn't help then I think your best option will be to uninstall and then reinstall Firefox. This will remove all user information, settings etc. If you are using Firefox Sync from your desktop then hopefully this shouldn't be a problem for you because your data will get synced back over once you have a blank copy of Firefox for Android installed again. I realise this isn't an ideal solution. If the above won't work for you then post back and hopefully another support volunteer will reply with a better solution.